Xenu.
An extraterrestrial galactic leader said to have transported aliens to Earth 75 million years ago and murdered them with hydrogen bombs at sites of volcanoes, turning them into thetans.
Meaning & usage
An extraterrestrial galactic leader said to have transported aliens to Earth 75 million years ago and murdered them with hydrogen bombs at sites of volcanoes, turning them into thetans.
Where this word comes from
From the works of L. Ron Hubbard, of unknown origin. Richard Abanes notes that a Journey into Mystery science fiction comic story featuring an alien warlord titled “Xemnu the Titan” (1961) was reprinted in 1967, the year that Hubbard composed the Xenu narrative.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.